C&W. 2 PCS 3.7V 18650 5000mAh Yellow Protected Lithium Li-ion Rechargeable Battery for LED Light& Headlight& Headlamp& Handheld Flashlight& Torch with 1PCS Quick Smart Charger Designed to charge your batteries quickly and safely. Input Voltage: 110-240V, 47-63Hz Charges 1 or 2 batteries simultaneously Can be used in Torch Flashlights and other electronic products. Over charge and discharge protection. Protection kicks in : 2.75v and 4.2v.